package com.sys.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_OK id: " + id;
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",
            commandProperties = {@HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")})
    public String paymentInfo_TimeOut(Integer id) {
        int timeNumber = 5000;
        //这里无论是超时还是报错都会触发降级
        //int exception = 1 / 0;
        /*try {
            TimeUnit.MILLISECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }*/
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_TimeOut id：" + id + " 耗时" + timeNumber + "毫秒";
    }

    //降级方法
    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " 降级方法";
    }

    // 服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"), //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("-----------paymentCircuitBreaker方法异常");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + " 调用成功，流水号：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "降级方法" + id;
    }

}
